Tire.



J. E. NICCOUGHTRY.

URE.

APPLlcATloN FILED N0v.8.1913.

l 9 l 55,255 Patented Sept. 28. 1915.

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Trim.

Speeicaton of Letters Patent.

Application filed November 8, 1913. Serial No. 799,971.

T0' all whom 'it may concern Be it knoivn that l, JOHN E. MGCoUeH- TRY, a citizen of the lUnited States, residing at Gary, in the county of Lake and State of Indiana, have invented new and useful Improvements in Tires, of which the following is a specification.

rl`his invention relates to tires, the object.

of the invention being to produce a tire case for pneumatic tires which will be puncture proof, which Will not be subject to bloWouts.

lVith the above and other objects in view, the invention consists in the construction7 combination and arrangement of parts, as Will hereinafter be more fully described, illustrated and claimed.

In the accompanying drawings z-Figure 1 is a cross section through the outer case of a pneumatic tire embodying the present invention, said vievv being projected into a perspective to illustrate the non-skid tread surface. Fig. 2 is a plan View of a fragment of the puncture proof armor or core, the same being spread out to better illustrate the form and relation of the convolutions of the coils. Fig. 3 is a plan view of a fragment of the tread surface of the tire illustrating the form thereof. Fig. Ll is a cross section on the line l-/l of Fig. Q showing the insulating sheets in their relation to the armor j sheet.

- Referring to the drawings l designates the body of the outer caseof a pneumatic tire, said body being formed of rubber or other resilient material preferably combined with reinforcing and strengthening fabric and cured ltogether as a Whole by any of the processes now in common use.

.In carrying out the present invention I employ a core `which isincorporated in and entirely incased by the body l of the outer case as indicated in Fig. l. This core embodies a puncture proof sheet 2 a portion of Which is clearly illustrated in Fig. 2, the said sheet being composed of tough coiled springs extending parallel to each other and longitudinally of the tire. The coils are alternately right and left hand ones and the convolutions of each coil are interwoven or interlaced with the adjacent convolutions of the coils at each side thereof so that all of the coils are inter-locked and Woven into a complete sheet, leaving such small spaces as to prevent ordinary nails and similar objects l from passing through said armor sheet.

lt opposite sides or the armor sheet 2 are arranged insulating sheets 3 each of Which is composed of 'heavy closely Woven textile fabric, such fabricbeing impregnated thoroughly with a preparation of zinc-oxid mixed and combined with pure tar to a heavy consistency.

Patented Sept. 23, i915.

This preparation is f generously applied to each of the insulating sheets so as to thoroughly impregnate and saturate the same in order thatthe preparation may find its way'readily .to all 'of the convolutions of the metallic armor sheet. As a. result, the entire armor sheet is lubricated and supplied at all times With said preparation which not only has the effect of lubricating the convolutions and preventing Wear and chaiing thereof but also has the effect of preventing the overheating ofthe tire Which ordinarily follows the use of metal in a tire the Walls of which are subu u "T l jected to continuous bending. The insu lating sheets are of the same area as the armor sheet 1 and may be secon-f4F 'ortheir marginal edges by means of fasteners 4 of any desired fornn The outer tread surfacel of the body l of the tire is molded to form a raised outline 5 simulating on a 'larger scale the form and arrangement of the interwoven convolutions of the armor sheet contained and incorporated within the body l. This imparts'an exclusive appearance to the tire, the general advantage, however, residing in the nonskid property of the tire asa result of the formation of the raised and interwoven con- .volutions referred to. 4

The tire hereinabove described is practi cally puncture proof, non-skid, and not subject to blow outs for the reason that the puncture proof sheet, together With the 4insulating sheets which cover the saine on both sides, extends to the extreme marginal edges and fastening beads of the outer case, there-` by making it next to impossible for excessive an' pressure to disrupt the Walls of the ruiter subjected. said preparation remaining in a Copies of this patent may be obtained for non-punctnrable sheet of metallic armor, and sheets fastened together at their opposite edges and composed of closely Woven textile fabric impregnated with a semiliquid lubricating preparation of zinc-oxid mixed with tar, said sheets being located at opposite sides of said armor sheet and inclosing the latter.

In testimony whereof l affix my signature in presence of two Witnesses.

JOHN EVERETT iicconenrm.

Vitnesses :v

JNO. M. SWEENEY, F. KLEINSCUMIDT.

ve cents each, by addressing the Commissioner of Patents, Washington, D. G. 

